Operates mechanical and electronic devices on the public transportation vehicle, including front and rear doors, wheelchair lift or ramp, wheelchair securement devices, bus kneeling device, radio, Automatic Vehicle Location (AVL) devices, passenger counters, destination signs, public address systems, heating and ventilating equipment, safety devices and warning lights, etc. Monitors the safety and mechanical operation of the public transportation vehicle assigned by constant attention to safety and mechanical devices and warning signals, such as the following (for the purposes of illustration only): The speedometer, water temperature gauge, oil pressure gauge, engine warning lights and buzzers, etc.